USD ($) | JPY (¥) | USD ($) | JPY (¥) | Multi-currency uncommitted shelf facility, U.S. dollar denominated 1 [Member] | Multi-currency uncommitted shelf facility, U.S. dollar denominated 1 [Member] | Multi-currency uncommitted shelf facility, U.S. dollar denominated 2 [Member] | Multi-currency uncommitted shelf facility, U.S. dollar denominated 2 [Member] | Multi-currency uncommitted shelf facility, total U.S. dollar-denominated debt [Member] | Multi-currency uncommitted shelf facility, Japanese yen denominated 1 [Member] | Multi-currency uncommitted shelf facility, Japanese yen denominated 1 [Member] | Multi-currency uncommitted shelf facility, Japanese yen denominated 1 [Member] | Multi-currency uncommitted shelf facility, Japanese yen denominated 1 [Member] | Multi-currency uncommitted shelf facility, Japanese yen denominated 2 [Member] | Multi-currency uncommitted shelf facility, Japanese yen denominated 2 [Member] | Multi-currency uncommitted shelf facility, Japanese yen denominated 2 [Member] | Multi-currency uncommitted shelf facility, Japanese yen denominated 2 [Member] | Multi-currency uncommitted shelf facility, Japanese yen denominated 3 [Member] | Multi-currency uncommitted shelf facility, Japanese yen denominated 3 [Member] | Multi-currency uncommitted shelf facility, Japanese yen denominated 3 [Member] | Multi-currency uncommitted shelf facility, Japanese yen denominated 3 [Member] | Multi-currency uncommitted shelf facility, total Japanese yen-denominated debt [Member] | Committed loan, U.S. dollar denominated [Member] | Committed loan, U.S. dollar denominated [Member] | Revolving credit facility [Member] | Revolving credit facility [Member] | Revolving credit facility [Member] | Revolving credit facility [Member] | Multi-currency uncommitted shelf facility Japanese Yen Denominated 4 [Member] | Revolving Credit Facility Member [Member] | Uncommitted Multi Currency Shelf Facility Member [Member] |
Repayment terms | 'Notes due May 2022 with annual principal payments that begin in May 2016. | | 'Notes due May 2022 with annual principal payments that begin in May 2016. | | ' | ' | 'Notes due July 2016 with annual principal payments that began in July 2010. | | ' | 'Notes due January 2017 with annual principal payments that began in January 2011. | | ' | ' | 'Notes due April 2014 with annual principal payments that began in April 2008. | 'Notes due April 2014 with annual principal payments that began in April 2008. | | ' | | ' | 'Notes due September 2017 with annual principal payments that began in September 2011. | 'Notes due September 2017 with annual principal payments that began in September 2011. | | ' | ' | 'Notes due January 2017 with annual principal payments that began in January 2011. | 'Notes due January 2017 with annual principal payments that began in January 2011. | | ' | ' | ' | ' | | ' | | 'Revolving line of credit. | [2] | ' | ' | | ' | ' | 'Revolving line of credit. | [2] | ' |